Type-writing machine.



PATENTED NOV. 19, 1907. G. B. KELLEY. TYPE WRITING MACHINE. APPLIOATION FILED MAR-.14. 1907.

2 SHEETS-SHEET 1.

No. 871,595. PATENTED NOV. 19, 1907.

0. E. KELLEY.

TYPE WRITING MACHINE. APPLICATION FILED MAB.14. 1907.

2 BHBETB SHHET 2.

By his Attorney UNITED STATES PATENT OFFICE.

CHARLES ELLEY, oFwATnRBURY, CONNECTICUT, ASSIGNOR T UNDERWOOD TYPE- Y WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION on NEW JERSEY. 1

TYPE-WRITING- MACHINE.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed March 14.19071" Serial No. 362,361. I

To all jwhom z'tmay concern:

Be it known that 1, CHARLES .E. KELLEY, acitizen of theU'nited States, residing in Waterbury, in the County of New Haven'and State ofConnecticut, have invented certain new and useful Improvements in Type-Writ ing Machines, of which the following is a I specification.

This invention relates to the special paperfeeding devices of typewriting machines designed to facilitate the writing of bills and"- simultaneously recording-them in the man- =and the present invention is in the nature- .15

1 disclosed in the UnitedStates Patent No.

ner'commonly known as condensed charging;

of an' improvement upon the mechanism 819,785 and'upon that disclosed in the pending. application of v Harry S. McCormack, No. 371,377, filed May 2, 1907; i

,platen may be rotated back to receive anew bill, and then forward to bring the bill to printing position. In order to effect this I movement of the platen, it is usual first to press a special finger-piece to effect the eon- 3O nection between thecrank and the platen and then to swing the crank; the latter be- 1 ing usually locked. in normal position, and

being released by the same movement of the special finger-piece that connects the crank to the platen. This two-fold manipulation is found'highlyobjectionable to the typewriter operator who is engaged in writing accounts at high speed, and who is consequently liable to make errors in the figures, if compelled to devote undue attention to the manipulation of'the paper feeding devices. I The object of the present invention, is to avoid the necessity of the'two-fold manipulation above referred to and .to this end, I preferably arrange yielding means to hold the crank in a normal position of disuse, and contrive to cause a single swinging movement of the crank both to release it from said yield- 1 ing means and .connect it to the platen, andalsoto rotate the platen. It is thus possible by a'single movement of the crank, without 'prior manipulation of any releasing device or any connecting device, to rotate the platen back to the desiredposition, whereby much mentallabor on the part of the operator is It is usual to construct the machine so that my improvements applie platen to rotate the latter.

saved, and liability of confusion and mistakes avoided.

In the preferred form of the invention, the Crank isymounted upon the platen axle, or

ently of the arm sufficient to swing the pawl into engagement with a toothed wheel, which is rigidly connected to the platen.

'The. engagement of the pawl with the wheel is mechanically maintained until the crank is returned to normal position, when a spring di'sengages the pawl from the wheel, and also serves to latch tion.

In the accompanying drawings, Figure 1 is a lan view -of the U11 erwood typewritm machine having the crank in its normal posiisan end elevation of the laten-Controlling devices made the subjectoi this ap lication; the crank being shown in a norma position of disuse, to permit rotation of the platen in either. direction independently of the crank. Fig. 3 is a perspective view of the platen-Controlling mechanism;, Fig. 4 is a .view similar to Fig. 2, but showing the crank as connected to the platen and as having rotated the same backwardly for the insertion of a bill in the machine. Figs. 5 and 6 are sectional elevations looking at the crank from the opposite side from Fig. 4;

. Fig. 5 showing the parts in the normal Ositiori, as at Fig. 1, and Fig. 6 showing t em as havin moved from the Fig. 5 position sufficiently to connect the crank to the Fig. 7 is a perspective view of an arm and a platen-driving pawl pivoted thereto. Fig. 8 illustrates the thereto. Fig. 2

platen frame of Ian 7 pivoting of the crank to an arm, which is journaled concentrically with the platen axle. Fig. 9 is a sectional rear elevation of the axially of the. platen.

The usual cylindrical platen 1 of an.Underwood typewritin machine is fixed upon an axle 2 journale in the ends 3,4, of a platen frame 5, the end of the axle projecting throu hthe platenframe end 3'having a finger-w heel 6 thereon by means of which the platen may be'rotated forwardly or-llb platen-controlling mechanism taken sleeve 10 platen is and lever, not shown Upon the other pro jecting end of theplaten axle, is secured byscrews 9, a hub or sleeve 10., towhich is rgidly secured a wheel 11 having on its perlfphery; teeth 12 equal in number with those 0 the lme-space wheel 7, said wheel always together with the, platen. The has a portion 13 of reduced diameter, and beyond that a portion 14 still more reduced in diameter to receive said wheel 11, the part 14'being formedwith a-fiat part 15, Fig. 6, and the wheel being formed with a hole to fit so that the hub 10 and the platen are compelled to turn with the wheel. The wheel is rotatable by means I of a pawl 16 having a tooth 17 to engage the teeth 12 of the wheel, but normally disengaged therefrormas seen at Figs. 2 and 5,

revolving to permit independent rotation of the wheel 11 and platen 1.- "Said pawl is pivoted at 18 upon an arm 19 having a hub 20 loosely journaled upon a collar 21 fixed by a pin 22 upon a supplemental platen axle 23, which is integral with the hub 10, but is more re- .duced in diameter than theportion14 upon which the wheel 11 is mounted. During the common operations of the platen, the collar 21 turns freely within the motionless-hub 20' of the arm 19.

The. backward and forward rotation of the platen for billing purposes, is effected by pivot 26 from the Figs. 5 the Fig. 6 position, said means of a crank 24 having a handle 25 and pivoted at 26 upon saidarm 19. The crank and arm, aswell as the pawl .16, may swing altogether around the platen axis, but the relative movements, whereby the pawl is engaged with and disengaged from the wheel 11. -The relative movement of the crank 24 upon the arm 19 is very slight, being limited by an eye 27 formed upon the crank below the pivot 26 and loosely surrounding the collar 21. The pawl .16 is pivoted at 28 to the crank 24 at a point above the pivot 18 or more remote than 18 from the and byia movement of the crank about the (and 8 position to pawl is swung into engagement with the toothed-wheel 11 there being an accompanying slight motion of the arm 19 in the direction of the arrow, Fig.6.

The pawl is maintained mechanically in engagement with the wheel 11 by means of a pm 29 projecting from the pawl to engage the guiding inner surface 30 of an annular member 31, which is fixed to the platen frame, said guidingsurface being concentric with the platen axis and serving to lock the pawl in the Fig. 2, 3, 4 and 6 position'rela tively to the wheel 11. i

The length of the stroke of the platen effected by the crank means of a sto 32, fixed upon an arm 3'3 contiguous to the member 31 and swinging freely about theshoulder'13 of the sleeve 10, and held in any means of a releasable pin ofholes 35 in the member 31 and provided with a finger piece- 36 whereby itmay be withdrawn from any of said holes, so that the stop may be adjusted to. any point around the rim 31.

desired position by member 13, but is held against rotation by a link 37 connected to an ear 38 on the platen frame; the slot 39 being providedin said link to he engaged by a' fastening screw 40 to 'per-' mit slight rotative ber 31. The eye 27 and the hub 20 are confined against the wheel 11 by means of a washer .41 formed upon the collar 21, Fig.9,

so that the entire structure is verycompact and of corfparatively little weight.

The cran 24v and .its associated parts are normally held in the' 'Fig. 1 position' by means oi a leaf-spring 42, fixedat oneend at ranged at the other end to bear normally against the projection '29 to press the same yieldingly into a notch 44 formed in the rim 31. j The stop-32 having been-set to the required position, as at Fig. 4, the handle 25 is grasped by the operator to swing the same towards the front of the *carriage in a dire'c tion indicated by the arrows, Figs. .2, 5 and 6. The general motionof the crank is about the platen axis. the crank swings the pawl 16 into engage ment with the wheel 11 in the manner already described, so that by means of further movement of the crank, the wheel 11 and platen are caused to rotate therewith in a direction to turn the platen backwardly to platen axis 2; j

The latter is loose upon the adjustment of the mem- The initial movement 0'1.

receive a new bill, this motion of theplaten 2.4 is determined by 34 toengage any of a series 43 to a part of the member. 31 and being ar-' continuing until arrested bythe stop 32 which may engage anotch 45 formed inithe "pawl. Upon the bill being inserted, the .crank is swung throu 11 its return stroke in the direction indicate by 'the arrow, Fig. 4,- the projection 29 riding in contact with the surface 34 which keeps the wheel 11 locked to the crank 24. Upon the return stroke of:

said crank, as the latter nears its normal position, the pin 29 is engaged by the free end of the spring 42 and snapped up into. the notch 44, thereby releasin the wheel and the platen and also arresting The crank.

Thus, it will be'seen, that by a simple mechanism, provision is made whereby the operator, when desiring torotate theplaten backwardly, needs only'to grasp the'crank, "and swing it in a single direction about the platen axis 2 automatically efl'ecting the locking of the crank to the platen, and main tainingsuchilock connection until the crank is swung back again, as far as itjwill g0, whereupon the first line of writing may be begun upon the bill. e Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus "described-my invention, I

claimz'f. W 1O 'luole platen, the combination with a toothedvwheel connected to the platen to revolve therewith, of an arm mounted-for revolution with said toothed-wheel, a pawl upon said arm and movable independently thereof and normally out [of engagement 'Vwith said toothedwheel, and a platen-oscillator dis-- .tinctfrom said arm and having means to move said pawl, into engagement with said toothed-wheel, and to act through-said pawl .to rotatefthe Wheel. L I a 2. Inia typewriting machine having a re'vo-' luble, pl aten, the combination with a toothed-- wheel connected to the platen to revolve 25, therewith, of an arm mounted for revo,l;-u'

tion'with said toothed-wheel, a pawl upoi v said arm and movable independently thereof and normally out of engagement with said toothed wheel, a platen oscillator distinct 3O fromsaid-arm and having means to moxie said pawl into engagement with said tootheg Wheel, and to act through said pawl to rota thewheehand means for maintaining oscillator away from and back to normal position,

Inatypewriting machine having a ram lubleplatemthe combination with a'toothd- 41) wheel connected to the platen to revolve.

therewith, of an arm,mounted for revolu crank stationary an said'pawl disengaged durin the.usual line-spacing movements of thep aten, means for enahling"a turning movement 'otthe crank to carry said pawl intoengagement with'said wheel, means for mechanically maintaining the engagement of the pawl and wheel during the excursion of; said c'rankaway from and hack to normal position, and a-stop for limiting the initial stroke of'the crank. a

4. In atypewritin machinehaving arevoluhle platen and a p aten axle, .the combinatitiltvith a-toothed wheelfixed upon said axle'fof 'acrank loosely supported to'swing about said axle, an 'arm confined between said crank andwheel and loose upon said axle, a pawl pivoted to'said arm and also pivoted to said crank at'a point more remote 1, In atypew riting machine having arevc-a chanicallygthe' engagement of-the pawl and" 3-5 Wheel, during the excursion of said 'platen from said axle than said arm-pivot, a pin projecting from said pawl, a fixed part having a notch into which said pin is pressed'by a spring both to hold. the awl away from the wheel,- and also to hold the crank stationary during the usual line by-line revolution ofthe platen, said crank being'efl'ective to force said pin out of said notch and to engage the pawl with the wheel, and said fixed part having a circulai' guiding surface, concentric with said axle to engage said-pin to lock the pawl to the wheel, and a stop to limit the initial stroke of the crank. v a a k 5. Ina typewriting machinehavingarevoluble platen and platen axle, the c onihina axle, of a crank loosely supported to swing both tojhold the pawl away from the "Sprin l and also to holdthe crank stationary whee the platen, said 'cranke ective to force said .pin out of said notch and to engage the pawl j-with the wheel, andsaid fixed part having a i lllou ar, guiding surfaceconcentric with said -wheel and a stop to limit the initial stroke. To? the orank,,sa1d spring-heing fixed; in the path of said pin opposite said notch, to en 5 gage the pin andpressit'into the notch.

6. In a typewriting machine having a revo tion with a toothed wheel fixed, upon said axle,'o l a crank loosely supported to swing ,vahout said axle, an arm distinct from said crank and loose upon said axle, a pawl'pivioted to said arm, a pin projecting from said pawl, and-a fixed part having a notch into which said pin is pressed by a spring both to hold the pawl away from the wheel, and also to' hold the crank stationary durin the usual line-hy-line revolution of the said crank having means to force said pin out of said notch and to engage the pawl with the wheel, and-said fixed p'art having a circular guiding surface concentric With said axle to engage said pin to lock the pawl to thewheel. I

7. In a typewritinq machine having a revo-. lublc platen, the com bination with a toothed wheel connected to the platen, of a crank loosely supported to revolve with said toothed wheel, an arm distinct from sa1d wheel,a pawl pivoted to said arm, means to hold the pawl away from the Wheel, and also to hold the crank stationary durin the usual linef-hy-line revolution of the p aten, said crank being effective to force the pawl into tion with atoothed wheel-fixed upon said during theusual" line-h linegrevoluti on-. 9f.

crank and revoluble with said crank and about said axle, an arm; confined! between 1.

notch into which, said pin; isipressed by a axle to engage said pin to lock the pawl to the,

' luhle platen and a platen axle, the combina-,

platen,

' the revolution of the being effective to force'said pin .out of said 3a'suigiace concentric with 40 axle, of an armlooseluponsaid axle, a crank pivoted tosaid arm,

' around said axle, a pin projecting from said engagement with the wheel, and a circular j guiding surface concentric with the wheel to lock the pawl to the wheel.

8. In a typewriting machine having a revoluble platen and platen axle, the combination with a toothed wheel fixed upon said axle, of a crank having a support upon said axle, an armloose upon said axle, a pawl and also pivoted to said crank at a point more remote from said axle than said arm-pivot, a pin projecting from said pawl, and a fixed part having a'notch into which said pin is pressed by a spring, to, hold the-pawl out of mesh with the wheel teeth, said fixed part having a circular guid is pressed by a spring ing surface concentric with said axle to engage said'pin to lock the pawl-to the wheel, and said crank having play at .the end which bears-upon the axle, suflicient to permit a pawl-meshing movement of the crank before wheel begins. t

9. Ina typewriting machine having a revoluble platen and a platen axle, the combina: tion with a toothed wheel fixed upon said axle, of a crank loosely supported upon said axle, a pawl pivoted to said crank, means distinct from said crankto carry the pawl pawl, and a fixedpart having a notch into which said pin is pressed by a spring to hold the pawl away from the wheel, said crank notch and to engage the pawl with the wheel, and saidfixed part having a circular guiding said axle to engage said pin to lock the pawl to the wheel. 10. In ,a typewriting machine having a revoluble platen and platen axle, the combi-- nation with a toothed wheel fixed upon said pivoted upon said ar'm', means 'to limit the vibration ofthe crank upon the arm, a pawl and having a upon the platen frame and having a circular pivoted tosaid arm, and also pivoted to said crank, a pin projectin fromsaid pawl, a fixedpart having a note into which said pin both to hold the pawl away from the wheel, and also to hold the crank stationary durin ,the usual line-byline revolution of the p aten, and means to maintain the pawl locked to the wheel during the excursion of the crank from and to normal position.

11. In a typewriting machine having a revoluble platen, the combination with a toothed wheel connected to the platen, of an arm revoluble with said ,wheel, a crank distinct from and pivoted to limit the vibration of the crank relatively to the arm, a pawl pivoted to said arm, means to hold the pawl away from the wheel, and also to hold the crank stationary during the usual line-by-line revolution of the platen, said crank being effective to force the pawlinto engagement with the wheel,

and a circular guiding surface concentric w1th the wheel to lock the pawl to the wheel. 12. In a typewriting machine having a revoluble platen, a platen axle, and a platen upon said arm, means frame in which said platen, is journaled, the

ccmbination of a toothed Wheel fixed upon said axle outside of said platen frame, a collar fixed upon said axle against said toothed wheel, an arm journaled loosely upon said collar, a crank pivoted upon said arm, and confined between the latter, and a part provided upon said crank having an eye or opening, and said collar being within the eye, and serving to limit the vibrations of said crank upon said arm, a pawl pivoted to said arm projecting pin, a fixed device surface provided with a notch in which said pin is yieldingly held by a spring, and means to determine the extent of the platen rotating movement of the crank away from and back to normal position. v CHARLES E. KELLEY.

Witnesses:

CHARLES L. Roo'r, EDWIN N. LnvIoK. 

